Human ventilation system - Unit 3 Flashcards
air passages do what….. huh…… huh
they transport air to and from lungs
nasal cavity
two nostrils seperated by septum
small hairs filters particles
rich blood supply to warm air
what is cilia
smol hair nose
what is another word for throat
pharynx
what does the throat lead to
2 openings, one to trachea and 1 to the oesophagus
what is the trachea
long tubular structure to the bronchi for the lungs
wtf is bronchi
tube lined with mucus membrane and held open by C-rings
leads to bronchioles
what are alveoli
micro air sacs at the end of bronchioles
how does inhalation happen
diaphram contracts and flatten
intercostal muscles contract
pressure decreases so gradient….
how does exhalation happen
diaphram relaxes and raised
external intercostal muscles relax
pressure increases so gradient….
what happens when CO2 dissolves in blood
carbonic acid
what detects level of CO2
chemoreceptors in the medulla oblangata which detects increse in pH…causes diaphragm to blah blah blah
